DESCRIPTIONThe brake hold operated indicator light illuminates when the brake hold system is operating (vehicle stopped due to brake fluid pressure hold) and turns off when the brake hold system operation is finished (brake fluid pressure decreases). The brake hold system may not operate depending on vehicle conditions even when the system is in standby mode and the brake hold standby indicator light is illuminated. If there is a system malfunction that causes brake hold control to be prohibited, when the vehicle is under the following conditions and the brake hold switch (electric parking brake switch assembly) is pressed, the brake hold operated indicator light blinks.
HINT:
CAUTION / NOTICE / HINTNOTICE: After replacing the skid control ECU (brake actuator assembly), perform acceleration sensor zero point calibration and store system information memorization. PROCEDURE
(a) Check that the brake hold standby indicator light operates normally. (b) If the brake hold operated indicator light does not illuminate even though the brake hold standby indicator light is illuminated, check that the following brake hold operation (brake fluid pressure is being maintained ) conditions are met.
HINT: If a malfunction occurs in one of the following systems, the brake hold operated indicator light will blink. If this occurs, perform troubleshooting on the malfunctioning system.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Enter the following menus: Chassis / Brake/EPB / Utility / Vehicle Control History (RoB). (d) Using the Techstream, check for Vehicle Control History (RoB). Chassis > Brake/EPB > Utility
HINT: If vehicle control history (RoB) is stored when the electronically controlled brake system and electric parking brake system are suspended and the brake hold switch (electric parking brake switch assembly) is operated with the following vehicle conditions met, the brake hold operated indicator light blinks.
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG). (c) Enter the following menus: Body Electrical / Combination Meter / Active Test. (d) Perform the Active Test of the combination meter assembly using the Techstream. Body Electrical > Combination Meter > Active Test
(e) Check the combination meter assembly. OK: The brake hold operated indicator light turns on or off in accordance with the Techstream operation.
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